Maybe because your so-called luck ran out on you once down in South America.

6 seconds sound clip from the The High and the Mighty (1954) movie soundboard.

You can hear this line at 01:56:17 in the DVD version of the movie.

Quote context

[...]

- Wanna run out of fuel, right over San Francisco? Wipe out a few bridges or apartment houses?

- Sullivan's been over this ocean lots of times. He knows his business.

- I've seen men act like this before. Sometimes, because of one thing or another fellow stops thinking straight temporarily.

- I've been flying a long time, Hobie.

- Yeah. Only, you're not the captain.

- Maybe because your so-called luck ran out on you once down in South America.

- And now this is no luck operation.

- You better go back to your helmet and goggles.

- Maybe.

- Here it is, Lennie. Color may not become you, but it'll suffice you.

[...]